3-Methyl-2-methylthio-4,7(3H,8H)-pteridinedione, Sodium Salt CAS 199789-54-3
| CAS No. | 199789-54-3 |
| Molecular Formula | C8H7N4O2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Methyl-2-methylthio-4,7(3H,8H)-pteridinedione, Sodium Salt is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Methyl-2-methylthio-4,7(3H,8H)-pteridinedione, Sodium Salt (CAS 199789-54-3), molecular formula C8H7N4O2SNa and molecular weight 246.22 g/mol, is a CATO reference standard with documented purity and traceability.
3-Methyl-2-methylthio-4,7(3H,8H)-pteridinedione, Sodium Salt (C8H7N4O2SNa) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H7N4O2S Na |
| Molecular Weight | 246.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2014 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 4-(Methylthio)-1H-pyrazolo[3,4-d]pyrimidin-6-ol (CAS 100047-41-4)
- 2-(Methylthio)-N-(2-(4-nitrophenoxy)ethyl)thiazolo[4,5-d]pyrimidin-7-amine (CAS 1000574-56-0)
- 4-Methyl-3-(methylthio)-7-nitro-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1000575-87-0)
- 3-(Methylthio)-4-phenyl-4H-benzo[e][1,2,4]thiadiazine 1,1-dioxide (CAS 1000577-38-7)
- 5-Methyl-2-(methylthio)pyrimidine (CAS 100114-24-7)
- 6-benzyl-2-(methylthio)pyrimidin-4(3H)-one (CAS 100142-46-9)
- 2-(Methylthio)-5,6-dihydropyrimidin-4(1H)-one (CAS 100185-53-3)
- 4-(methylthio)-6-(tributylstannyl)pyrimidine (CAS 1002719-56-3)
Recommended Standards
- 1-(Difluoromethyl)-4-iodo-3,5-dimethyl-1H-pyrazole (CAS 956477-73-9)
- 5-Chloro-1,2-dimethyl-1H-benzo[d]imidazole (CAS 26960-04-3)
- 287389-48-4 (1',2',3',4',5',6'-~13~C_6_)[1,1'-Biphenyl]-2-ol DTXSID20745800 (CAS 287389-48-4)
- (5-cyanofuran-2-yl)methyl acetate (CAS 89149-68-8)
- (R)-1-Benzyl-N-isopropylpyrrolidin-3-amine (CAS 1354019-30-9)
- 5-Methylquinoxalin-6-amine (CAS 171102-36-6)
- (1-(2-Morpholinopyridin-4-yl)-1H-pyrazol-4-yl)methanol (CAS 1429309-26-1)
- Rocuronium Impurity 73 (CAS CATO-C4X-124273)
- 3-(1,3-Benzodioxol-5-yl)-1,2,4-oxadiazol-5-ol (CAS 931358-03-1)
- Semaglutide impurity 71 (CAS CATO-C4X-222671)
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